Here is a smart robotic system that takes care of your lawn and helps you save money on your water bill. Growver is a lawn watering robot that intelligently navigates and irrigates your lawn. It has an app that lets you adjust water levels and control the robot remotely.
Growver relies on water sensors to detect areas of your yard that are dry. It has fill, outline, and remote modes and can save you up to 50% on your water bill. More information is available on Kickstarter.